I recently moved my Unraid onto new hardware. I had another Ubunutu system running Docker containers for Tdarr and Plex with Unraid holding the media.

 

I had an Nvidia 1050ti in the Tdarr/Plex system, and when I moved Unraid, I moved the Nvidia card to it. I then added Plex and Tdarr to Unraid and moved the previous Tdarr configuration over, so they are all the same settings.

 

I am seeing a massive hit to performance with Tdarr in Unraid. I easily hit 170FPS processing 1080p 10bit H265 files on the Ubuntu system, which was on much older hardware. In Unraid, I barely hit 60 fps while doing the same thing. 4K transcodes were hitting the upper 80fps, and now, they are 17fps with the same configuration. The GPU activity shows it is barely taxing the GPU encoder/decoder, and the CPU is doing almost nothing. Checking if file access could be the bottleneck, the disks are showing virtually no significant activity either, and the old system was pulling across the network to process video.

 

Any ideas on what is going on here?

 

Diagnostics to come.....

 

 

 

********I think I may have figured out the issue: PCIE lanes! The MB and CPU I've used (R58500G & M-ATX B650) only provide PCIE4 x8 for the first slot and PCIE4 x1 for the other three slots. The first slot, usually for a GPU, I have my SATA controller in it for extra disk bandwidth since it's a 24 port card. That means the Nvidia is in a slot with only 1 PCIE lane. I think the older system had more lanes for the Nvidia card as there wasn't a SATA controller card in it, and that is where I am seeing the performance drop.

 

Now, if only disabling unneeded MB devices (audio, USB ports, etc.) could release those lanes for PCIE slots, that would be awesome. Heck, even the other two PCIE_3 and PCIE_4 slots I could do without if the lanes could be diverted to PCIE_2. But I don't think it works like that.

 

 

knoxx-diagnostics-20241129-2117.zip

Edited November 30, 20241 yr by aglyons

if it exsit it would be in bios.